Airtac SAID40 Double Rod Cylinder SAID40AX120S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX120S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 120mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke120 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX120S
The AirTAC SAID40X120-S is a double-acting, double-rod ISO 15552 profile cylinder. A single piston pushes a rod out of both end covers, meaning the annulus area is identical on extend and retract. Consequently, it generates an equal 528 N of force in both directions at 0.5 MPa (739 N at 0.7 MPa). Because this is an -S variant, it includes a magnet for position sensing.
This specific unit features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount CMSE reed or DMSE electronic switches exactly where needed. The through-rod design is ideal for mounting a primary workpiece on one end and a cam or position flag on the rear.
Airtac SAID40 Double Rod Cylinder SAID40AX120S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX120S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID40 Double Rod Cylinder SAID40AX120S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAID40 Double Rod Cylinder SAID40AX120S Is Used
Symmetric Force Transfer
Ideal for shuttle mechanisms requiring identical 528 N push and pull forces at 0.5 MPa, ensuring consistent cycle times in both directions without pressure compensation.
Anti-Rotation Slides
The twin-rod design prevents piston rotation during vertical lifting, providing stable guidance for material handling without needing an external guide rail.
Rear-Cam Actuation
Mount the primary tool on the front rod and a rear cam or limit flag on the protruding rear rod to mechanically trigger secondary sequence valves or mechanical stops.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX120S the Right Cylinder?
Choose this 40 mm bore when an application demands equal push and pull forces alongside dual-side guidance. If you need higher thrust, stepping up to the 50 mm bore yields 825 N each way at 0.5 MPa; stepping down to the 32 mm bore offers 345 N. The twin-rod architecture inherently resists torsional rotation better than a single-rod SAI, making it the preferred choice for guided lifting or multi-axis transfer.
This model uses a PT tapered port and supports mountings Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It is dimensionally interchangeable per ISO 15552. Remember that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If your system loses air pressure, the cylinder will drift, requiring an external rod lock or a BSAID clamp-lock cylinder for secure positioning.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAID40 Double Rod Cylinder SAID40AX120S FAQ
Because the rod exits both ends, the effective piston area is the same in both directions. It delivers an equal 528 N of force at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extend and retract strokes.
Yes. The SAID40X120-S is dimensionally interchangeable per ISO 15552 and uses a standard mounting interface. It can serve as a drop-in replacement for other ISO 15552 double-rod cylinders, utilizing mountings like FA, LB, or TC.
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